University of Maryland, College Park. Bureau of Business and Economic Research. (1954). Southern Maryland, a tobacco economy.
शिकागो शैली (17वां संस्करण) प्रशस्ति पत्रUniversity of Maryland, College Park. Bureau of Business and Economic Research. Southern Maryland, a Tobacco Economy. College Park, 1954.
एमएलए (8वां संस्करण) प्रशस्ति पत्रUniversity of Maryland, College Park. Bureau of Business and Economic Research. Southern Maryland, a Tobacco Economy. 1954.
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